What is CVE-2026-31436?

CVE-2026-31436 is a critical-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 9.8/10. Published 2026-04-22.

How severe is CVE-2026-31436?

Critical severity. CVSS v3 base score is 9.8 out of 10.

NULL pointer dereference in Linux

CVE-2026-31436

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() At the end of this function, d is the traversal cursor of flist, but the code completes f…

EPSS: 0.001 (20.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions aa8d18becc0c14aa3eb46d6d1b81450446e11b87, 6.8, 0
Linux Linux_kernel — versions 7.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-31436?: CVE-2026-31436 is a critical-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 9.8/10. Published 2026-04-22.
How severe is CVE-2026-31436?: Critical severity. CVSS v3 base score is 9.8 out of 10.